JP2011245502A - Annular member by edge forming press work, and method for manufacturing the same - Google Patents
Annular member by edge forming press work, and method for manufacturing the same Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- 230000002093 peripheral effect Effects 0.000 claims abstract description 89
- 229910052751 metal Inorganic materials 0.000 claims abstract description 48
- 239000002184 metal Substances 0.000 claims abstract description 48
- 239000007769 metal material Substances 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims description 10
- 230000037303 wrinkles Effects 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 19
- 238000001125 extrusion Methods 0.000 description 13
- 238000005304 joining Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
本発明は、エッジ形成プレス加工により金属平板から多角形の環状部材を製造する方法及び多角形の環状部材に関する。 The present invention relates to a method of manufacturing a polygonal annular member from a metal flat plate by edge forming press working, and a polygonal annular member.
板金加工により、複数枚の金属の平板を溶接等により結合し、エッジを備える矩形環状部材を製造することは従来から行われている。
しかし、板金加工に比べ製造コストの安いプレス加工により、曲率半径の小さいエッジを備える矩形の環状部材を形成することは、従来から困難を伴う。
Conventionally, a plurality of metal flat plates are joined together by welding or the like by sheet metal processing to produce a rectangular annular member having an edge.
However, it has been difficult to form a rectangular annular member having an edge with a small radius of curvature by pressing at a lower manufacturing cost than sheet metal processing.
比較的小さな曲率半径のエッジ（隅）を有する環状部材を形成する先行技術として、特許文献１と２がある。
特許文献１では、被加工素材の内部に液圧を付与し、加圧された被加工素材を、ダイキャビティを有するダイ内で包囲することにより、チューブ状の被加工素材をハイドロフォーミング成形する技術が開示されている。
Patent Documents 1 and 2 are prior arts for forming an annular member having an edge (corner) having a relatively small radius of curvature.
In Patent Document 1, a technique of hydroforming forming a tubular workpiece material by applying a hydraulic pressure to the inside of the workpiece material and surrounding the pressurized workpiece material within a die having a die cavity. Is disclosed.
また、特許文献２では、密閉される金型のキャビティ内において、管状の被加工部材の内部に成形液圧を付与して、拡管し、その被加工部材をキャビティ内表面に密着させることで、被加工部材をキャビティ内表面に沿った形状に成形するチューブハイドロフォーミング方法であって、被加工部材の外表面とキャビティ内表面の間の所定の位置に、所定の空間が形成されるように、かつ、被加工部材の断面周長が、キャビティの断面周長よりも長くなるように、予備成形された被加工部材をキャビティ内にセットし、被加工部材の内部に成形液圧を付与する技術が開示されている。 Moreover, in patent document 2, in the cavity of the metal mold | die sealed, by giving a shaping | molding liquid pressure inside the tubular to-be-processed member, it is expanded, and the to-be-processed member is closely_contact | adhered to the cavity inner surface, A tube hydroforming method for forming a workpiece into a shape along the inner surface of the cavity, so that a predetermined space is formed at a predetermined position between the outer surface of the workpiece and the inner surface of the cavity. In addition, a technique for setting a preformed workpiece in the cavity so that the sectional circumference of the workpiece is longer than the sectional circumference of the cavity, and applying a molding fluid pressure to the inside of the workpiece. Is disclosed.
また、環状のパイプの外周面の半部に密着する半筒状部においてエッジを形成する先行技術として、特許文献３がある。
特許文献３では、この方法の第１工程は、接続部形成部と平坦部とを有する第１中間加工品をつくり、第２工程は、第１中間加工品よりも接続部形成部の屈曲深さが大きく、平坦部の幅が小さい第２中間加工品をつくり、第３工程は、接続部形成部と、傾斜平坦部と、幅狭平坦部を有する第３中間加工品をつくり、第４工程は、第３中間加工品の傾斜平坦部を斜め上方に押圧し、傾斜部平坦部と接続部形成部の側壁との連接部に材料を集めて第４中間加工品をつくり、第５工程は、第４中間加工品の接続部形成部の側壁、傾斜平坦部および幅狭平坦部を上下から加圧し、接続部形成部の両側壁の開口端部にばりが形成された第５中間加工品をつくる。第６工程は、ばりを除去してケーシング構成部材をつくる技術が開示されている。
Moreover, there exists patent document 3 as a prior art which forms an edge in the semi-cylindrical part closely_contact | adhered to the half part of the outer peripheral surface of an annular pipe.
In Patent Document 3, the first step of this method is to produce a first intermediate processed product having a connecting portion forming portion and a flat portion, and the second step is a bending depth of the connecting portion forming portion rather than the first intermediate processed product. A second intermediate work product having a large flatness and a small flat portion width is produced, and the third step produces a third intermediate work product having a connection portion forming portion, an inclined flat portion, and a narrow flat portion; The step presses the inclined flat portion of the third intermediate processed product obliquely upward, collects materials at the connecting portion between the inclined flat portion and the side wall of the connection portion forming portion, and forms a fourth intermediate processed product. The fifth intermediate processing in which the side wall, the inclined flat portion, and the narrow flat portion of the fourth intermediate processed product are pressurized from above and below, and a flash is formed at the opening ends of both side walls of the connection portion forming portion. Make goods. In the sixth step, a technique for removing a flash to make a casing component is disclosed.
しかし、特許文献１で開示された技術には、その圧縮成形の際に被加工素材が均一に圧縮されず、残留応力や被加工素材の肉厚の不均一性が発生するなどの問題がある。
また、特許文献２で開示された技術は、管状の被加工部材を成形液圧にて拡管し、キャビティ形状に沿って成形させるチューブハイドロフォーミングの技術に関するものであるが、この成形のためには大掛かりな設備が必要なので製造コストが高くなり、また、被加工部材の肉厚とほぼ等しい程度の小さな曲率半径を有する隅、即ちエッジを内周面に形成することは、大きな液圧をかけても困難であった。
また、特許文献３で開示された技術では、小さな曲率半径を有するエッジ部を形成するために、一度ばりを形成してからそのばりを除去するなど、多くの工程が必要なので製造コストが高くなり、また、この技術により凸型のエッジ部を形成すること、即ち外周に形成することはできるが、凹型の隅であるエッジ部を内周面に形成することはできない。
However, the technique disclosed in Patent Document 1 has a problem that the material to be processed is not uniformly compressed during the compression molding, and residual stress and uneven thickness of the material to be processed occur. .
The technique disclosed in Patent Document 2 relates to a tube hydroforming technique in which a tubular workpiece is expanded with a molding fluid pressure and molded along a cavity shape. Since large-scale equipment is required, the manufacturing cost is high, and forming a corner having a small radius of curvature that is almost equal to the thickness of the workpiece, that is, forming an edge on the inner peripheral surface, requires a large hydraulic pressure. It was also difficult.
In addition, the technique disclosed in Patent Document 3 requires many steps such as forming a flash once and then removing the flash in order to form an edge portion having a small radius of curvature, which increases the manufacturing cost. In addition, a convex edge portion can be formed by this technique, that is, it can be formed on the outer periphery, but an edge portion that is a concave corner cannot be formed on the inner peripheral surface.
そこで、本発明は、上記問題に鑑みてなされたものであり、本発明の目的とするところは、環状部材の内周面に小さな曲率半径を備え、均質な肉厚を有するエッジをプレス加工により形成し、安い製造コストで多角形の環状部材を製造すること、及びその多角形の環状部材を提供することにある。 Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide an edge having a small curvature radius on the inner peripheral surface of the annular member and having a uniform wall thickness by press working. It is to form and manufacture a polygonal annular member at a low manufacturing cost, and to provide the polygonal annular member.
上記課題を解決するために、本発明のある観点によれば、プレス加工により金属平板から多角形の環状部材を製造する方法であって、平面部と、曲面からなるコーナー部と、前記コーナー部と前記平面部の境界領域にある変形部とからなる側周部を絞り加工により成形する工程と、前記金属平板面から予め定めた高さに前記側周部を成形する工程と、前記側周部の前記高さに亘り、前記環状部材の内側から前記コーナー部を押し出すと共に、前記変形部を形成する金属材料をエッジ部へ補充することにより、前記環状部材の内周面において、前記コーナー部から、前記コーナー部の曲率半径より小さな曲率半径を有する前記エッジ部を成形する工程と、を含む多角形の環状部材の製造方法が提供される。
この構成によれば、環状部材の内周面に小さな曲率半径を備えるエッジをプレス加工により形成し、安い製造コストで多角形の環状部材を製造することを可能とする。
In order to solve the above-described problem, according to an aspect of the present invention, there is provided a method of manufacturing a polygonal annular member from a metal flat plate by press working, a planar portion, a corner portion formed of a curved surface, and the corner portion. And a step of forming a side peripheral portion comprising a deformed portion in a boundary region of the flat portion by drawing, a step of forming the side peripheral portion to a predetermined height from the metal flat plate surface, and the side periphery The corner portion is formed on the inner peripheral surface of the annular member by extruding the corner portion from the inside of the annular member over the height of the portion and replenishing the edge portion with a metal material forming the deformed portion. And a step of forming the edge portion having a radius of curvature smaller than the radius of curvature of the corner portion.
According to this configuration, an edge having a small radius of curvature is formed by pressing on the inner peripheral surface of the annular member, and a polygonal annular member can be manufactured at a low manufacturing cost.
また、さらに、前記絞り加工におけるしわ押えにより保持され、前記側周部の成形に使用されなかった前記金属平板の一部から、前記環状部材のフランジを成形する工程を含むことを特徴としてもよい。
この構成によれば、側周部だけでなくフランジを備え、そのフランジと結合する側周部の一端においても小さな曲率半径を備える環状部材を製造することを可能とする。
Further, it may include a step of forming a flange of the annular member from a part of the metal flat plate that is held by the wrinkle presser in the drawing process and is not used for forming the side peripheral portion. .
According to this configuration, it is possible to manufacture an annular member that includes a flange as well as the side peripheral portion and has a small radius of curvature at one end of the side peripheral portion that is coupled to the flange.
また、前記コーナー部の断面形状は、円弧状であり、前記変形部の断面形状は、前記側周部の内側方向へ突出した略アーチ状であり、前記コーナー部の前記円弧の円周上の中点と、前記変形部の略アーチの頂点とを押し出すことにより、前記エッジ部を成形することを特徴としてもよい。
この構成によれば、より効果的に均質な肉厚を有するエッジを備える多角形の環状部材をプレス加工により製造することを可能とする。
The cross-sectional shape of the corner portion is an arc shape, and the cross-sectional shape of the deformable portion is a substantially arch shape protruding inward of the side peripheral portion, and is on the circumference of the arc of the corner portion. The edge portion may be formed by extruding a midpoint and a vertex of a substantially arch of the deformable portion.
According to this configuration, a polygonal annular member having an edge having a uniform wall thickness can be more effectively manufactured by press working.
また、前記側周部の前記高さは、前記矩形環状部材の肉厚の５倍以上であり、前記エッジ部における内周面の曲率半径を、前記肉厚より小さく成形することを特徴としてもよい。
この構成によれば、矩形環状部材の側周部の高さが高く、エッジの肉厚が均質であり、曲率半径の小さいエッジを備える矩形環状部材を製造することを可能とする。
Further, the height of the side peripheral portion is not less than five times the thickness of the rectangular annular member, and the radius of curvature of the inner peripheral surface of the edge portion is formed smaller than the thickness. Good.
According to this configuration, it is possible to manufacture a rectangular annular member having an edge having a high side peripheral portion, a uniform edge thickness, and a small curvature radius.
本発明のある観点によれば、上記載の多角形の環状部材の製造方法によって製造された多角形の環状部材が提供される。
この構成によれば、環状部材の内周面に小さな曲率半径を備え、均質な肉厚を有するエッジをプレス加工により形成し、安い製造コストで製造することにより安価な多角形の環状部材を提供することを可能とする。
According to an aspect of the present invention, there is provided a polygonal annular member manufactured by the polygonal annular member manufacturing method described above.
According to this structure, an inexpensive polygonal annular member is provided by forming an edge having a small curvature radius on the inner peripheral surface of the annular member, forming a uniform thickness by press working, and manufacturing at a low manufacturing cost. It is possible to do.
本発明のある観点によれば、プレス加工により金属平板から成形される多角形の環状部材であって、前記多角形環状部材は、側周部とフランジからなり、前記側周部は、内周面において前記多角形環状部材の肉厚より小さい曲率半径を有するエッジ部を備え、前記側周部の前記高さは、前記肉厚の５倍以上であり、前記フランジは、前記側周部の一端に備えられている、ことを特徴とする多角形環状部材が提供される。
この構成によれば、プレス加工により形成するので、安い製造コストで製造することができ、安価な矩形の環状部材を提供することを可能とする。
According to an aspect of the present invention, a polygonal annular member formed from a metal flat plate by press working, the polygonal annular member includes a side peripheral portion and a flange, and the side peripheral portion has an inner periphery. An edge portion having a radius of curvature smaller than a wall thickness of the polygonal annular member on the surface, the height of the side circumferential portion is not less than 5 times the wall thickness, and the flange is formed on the side circumferential portion. A polygonal annular member is provided that is provided at one end.
According to this configuration, since it is formed by press working, it can be manufactured at a low manufacturing cost, and an inexpensive rectangular annular member can be provided.
本発明のある観点によれば、シームレスな多角形の環状部材であって、前記多角形環状部材は、側周部とフランジからなり、前記側周部は、内周面において前記多角形環状部材の肉厚より小さい曲率半径を有するエッジ部を備え、前記側周部の前記高さは、前記肉厚の５倍以上であり、前記フランジは、前記側周部の一端に備えられている、ことを特徴とする多角形環状部材が提供される。
この構成によれば、プレス加工により形成するので、安い製造コストで製造することができ、安価な矩形の環状部材を提供することを可能とする。
According to an aspect of the present invention, there is provided a seamless polygonal annular member, wherein the polygonal annular member includes a side peripheral portion and a flange, and the side peripheral portion is formed on the inner peripheral surface of the polygonal annular member. An edge portion having a smaller radius of curvature than the wall thickness, the height of the side peripheral portion is not less than five times the wall thickness, and the flange is provided at one end of the side peripheral portion, A polygonal annular member is provided.
According to this configuration, since it is formed by press working, it can be manufactured at a low manufacturing cost, and an inexpensive rectangular annular member can be provided.
以上説明したように、本発明によれば、環状部材の内周面に小さな曲率半径を備え、均質な肉厚を有するエッジをプレス加工により形成し、安い製造コストで多角形の環状部材を製造することができ、また、環状部材の内周面に小さな曲率半径を備え、均質な肉厚を有するエッジをプレス加工により形成し、安い製造コストで製造することにより、安価な多角形の環状部材を提供することができる。さらに、肉厚が１．５ｍｍ以下の薄い板材であってもエッジを形成した多角形の環状部材を製造することができる。 As described above, according to the present invention, an annular member having a small radius of curvature is formed on the inner peripheral surface of the annular member, and an edge having a uniform wall thickness is formed by pressing, thereby producing a polygonal annular member at a low manufacturing cost. An inexpensive polygonal annular member having a small radius of curvature on the inner peripheral surface of the annular member, forming an edge having a uniform wall thickness by pressing, and manufacturing at a low manufacturing cost Can be provided. Furthermore, even if it is a thin board | plate material with a wall thickness of 1.5 mm or less, the polygonal annular member which formed the edge can be manufactured.
以下では、図面を参照しながら、本発明の各実施形態に係る装置等について説明する。
まず、プレス加工について説明する。プレス加工とは、金型の間に素材をはさみ、金型に力を加えることにより、素材を金型の形に成形するものであり、一般的には、他の機械加工と比較して生産性が高く、連続加工も可能であり、大量生産に向いているので、プレス加工によって製造される金属部品は、コストを安く抑えることが可能となる。一般的に、プレス加工には、せん断、曲げ、絞りなどの種類があり、対象となる素材と完成品に応じて適宜適切な手段が選択される。
Below, the apparatus etc. which concern on each embodiment of this invention are demonstrated, referring drawings.
First, press working will be described. Pressing is a process in which a material is formed between molds by applying a force between the molds and applying force to the molds. In general, it is produced in comparison with other machining processes. The metal parts manufactured by press working can be kept at a low cost because it has high performance and can be continuously processed and is suitable for mass production. Generally, there are various types of press working such as shearing, bending, and drawing, and an appropriate means is appropriately selected according to the target material and the finished product.
図１４は、一般的に行われているプレス加工における絞り加工の手順を説明するものである。絞り加工は、パンチ、ダイス、しわ押えという金型を用いて板材から三次元形状の部材を作る加工法である。まず、図１４(a)は、板状の素材９８が、ダイス９２としわ押え９３により挟み込まれた状態を示す。図１４(b)は、この状態から、パンチ９４がプレス機械等により下げられてくると、素材９８は、ダイス９２としわ押え９３の間に挟まれたまま押し込まれることにより塑性変形を起こし、ダイス９２としわ押え９３の間に挟まれた部分は、パンチ９４と共に徐々に引きずりだされていく様子を示す。図１４(b)のような状態で、パンチ９４を押し下げることを止めれば、図１４(d)のように、円筒状の側周部９８１にフランジ９８２のついた部材が生産されることになる。図１４(c)は、さらにパンチ９４を押し込むと、ダイス９２としわ押え９３の間に挟まれた部分は完全に引きずりだされ、図１４(e)のように、フランジのない円筒状の側周部９８１を備える筒状の部材が生産されることを表わしている。この後、パンチ９４を上げ、ノックアウトすれば、部材は金型から外れる。 FIG. 14 illustrates a drawing process in a generally performed press process. Drawing is a processing method in which a three-dimensional member is formed from a plate material using a die such as punch, die, and wrinkle presser. First, FIG. 14A shows a state in which a plate-shaped material 98 is sandwiched between a die 92 and a wrinkle presser 93. In FIG. 14B, when the punch 94 is lowered by a press machine or the like from this state, the material 98 is plastically deformed by being pushed between the die 92 and the crease presser 93, A portion sandwiched between the die 92 and the crease presser 93 shows a state where it is gradually dragged together with the punch 94. If the pressing of the punch 94 is stopped in the state as shown in FIG. 14 (b), a member with a flange 982 is produced on the cylindrical side peripheral portion 981 as shown in FIG. 14 (d). . In FIG. 14 (c), when the punch 94 is further pushed in, the portion sandwiched between the die 92 and the crease presser 93 is completely dragged, and the cylindrical side without the flange as shown in FIG. 14 (e). This shows that a cylindrical member having a peripheral portion 981 is produced. Thereafter, when the punch 94 is raised and knocked out, the member comes off the mold.
このように生産された筒状の部材又はフランジのついた筒状の部材の側周部９８１は、継ぎ目のない（シームレスな）環状部を形成する。また、フランジは、ダイス９２としわ押え９３により押さえつけられて形成されるので、その両面ともフラットに形成される。 The side peripheral portion 981 of the cylindrical member or the flanged cylindrical member produced in this way forms a seamless (seamless) annular portion. Further, since the flange is formed by being pressed by the die 92 and the crease presser 93, both surfaces thereof are formed flat.
＜第１実施形態＞
図１は、環状部材の原材料となる金属平板の斜視図である。本実施形態では、その外形は、ほぼ正方形であるが、環状部材の形状に応じて、適宜長方形、多角形、円形、楕円形等、その他の形状を選択してもよい。また、大きさ及び肉厚も、環状部材の適用に応じて、適宜決定される。この金属平板は、塑性変形を容易にするため、中央部にほぼ正方形の穴が空いているが、穴は空いていなくてもよい。この後工程では、この平板に対して、上述した絞り加工を施すことにより、環状部材を形成する。
<First Embodiment>
FIG. 1 is a perspective view of a metal flat plate that is a raw material of an annular member. In the present embodiment, the outer shape is substantially square, but other shapes such as a rectangle, a polygon, a circle, and an ellipse may be selected as appropriate according to the shape of the annular member. Moreover, a magnitude | size and wall thickness are also determined suitably according to application of an annular member. This metal flat plate has a substantially square hole in the center to facilitate plastic deformation, but the hole does not have to be open. In this post-process, the annular member is formed by subjecting this flat plate to the drawing process described above.
＜第１工程＞
図２は、最初の工程（第１工程）を行った後の環状部材２０の様子を示す。具体的には、金属平板１０を、平面視（図２(a)）の側周部２４の外形に等しい外形を有するパンチで、絞り加工した部材を示す。本実施形態では、平面視（図２(a)）の側周部２４の外形は、角部２５を除き、概ね、矩形である。しかし、三角形や五角形などの多角形であってもよい。また、本実施形態では、図１４(b)で絞り加工を止めたものであり、完成した時にフランジ４１となるように金属平板１０（４１）の部分が残っている。また、図１に示したように、金属平板１０はパンチにより押し込まれた部分に穴が開いていたので、塑性変形を起こし、平面視で穴の形も正方形から変形している。また、パンチを押し込む深さ（側周部２４の高さ）は、後工程で側周部の高さを成形する方法に応じて決定される。
<First step>
FIG. 2 shows a state of the annular member 20 after performing the first step (first step). Specifically, a member obtained by drawing the metal flat plate 10 with a punch having an outer shape equal to the outer shape of the side peripheral portion 24 in a plan view (FIG. 2A) is shown. In the present embodiment, the outer shape of the side peripheral portion 24 in plan view (FIG. 2A) is generally rectangular except for the corner portion 25. However, it may be a polygon such as a triangle or a pentagon. Further, in the present embodiment, the drawing process is stopped in FIG. 14B, and the metal flat plate 10 (41) remains so as to become the flange 41 when completed. Further, as shown in FIG. 1, since the metal flat plate 10 has a hole in the portion pushed by the punch, plastic deformation occurs, and the shape of the hole is also deformed from a square in plan view. Moreover, the depth (height of the side periphery 24) which pushes a punch is determined according to the method of shape | molding the height of a side periphery in a post process.
側周部２４は、角部２５を除き、平面部２１から構成されている。角部２５は、図２(c)により、拡大図として示されている。角部２５は、主にコーナー部２２とその両側に変形部２３が備えられる。そして、その変形部２３は、平面部２１と繋がっているので、変形部２３は、コーナー部２２と平面部２１との間にあり、両者の境界領域にあるということもできる。 The side peripheral portion 24 is composed of the flat surface portion 21 except for the corner portion 25. The corner 25 is shown as an enlarged view in FIG. The corner portion 25 is mainly provided with a corner portion 22 and deformed portions 23 on both sides thereof. And since the deformation | transformation part 23 is connected with the plane part 21, it can be said that the deformation part 23 exists between the corner part 22 and the plane part 21, and exists in the boundary area of both.
図２(b)は、環状部材２０の側面図であり、金属平板１０がパンチに押し込まれたことにより、将来フランジとなる金属平板１０（４１）の位置から、側面視で金属平板１０の面へ、側周部２４が立ち上がっている様子を示す。側周部２４の一つの側面は、平面部２１、コーナー部２２と変形部２３から成っている。また、金属平板１０（４１）は、後工程でフランジとなる。即ち、絞り加工におけるしわ押えとダイスにより保持され、側周部２４の成形に使用されなかった金属平板１０の一部から、環状部材のフランジを成形し、その両面ともフラットに形成されている。本実施形態では、フランジを備えているが、側周部２４の成形にすべて金属平板を使用しフランジを備えない環状部材であってもよい。 FIG. 2B is a side view of the annular member 20, and the surface of the metal flat plate 10 in a side view from the position of the metal flat plate 10 (41) to be a flange in the future when the metal flat plate 10 is pushed into the punch. A state where the side peripheral portion 24 is raised is shown. One side surface of the side peripheral portion 24 includes a flat portion 21, a corner portion 22, and a deformable portion 23. Moreover, the metal flat plate 10 (41) becomes a flange in a later process. That is, the flange of the annular member is formed from a part of the metal flat plate 10 which is held by the wrinkle presser and the die in the drawing process and is not used for forming the side peripheral portion 24, and both surfaces thereof are formed flat. In this embodiment, a flange is provided, but an annular member that uses a metal flat plate for forming the side peripheral portion 24 and does not have a flange may be used.
本実施形態では、環状部材２０は矩形なので、４つの角部２５を備え、側周部の隣り合う２つの平面部２１は直角をなすように構成されている。もちろん、上述したように、環状部材が他の多角形である場合には、それに応じた角度をなすことになり、その角度の変化はコーナー部により吸収されることになる。 In the present embodiment, since the annular member 20 is rectangular, the annular member 20 is provided with four corner portions 25, and two planar portions 21 adjacent to each other on the side peripheral portion are configured to form a right angle. Of course, as described above, when the annular member is another polygon, an angle corresponding to the annular member is formed, and the change in the angle is absorbed by the corner portion.
図３は、環状部材２０の斜視図であり、製造中の環状部材２０が、概ね矩形の側周部２４と、将来フランジとなる金属平板１０の残余（１０（４１））と、側周部２４の中側にある金属平板１０を備えることを示す。側周部２４は、四隅に、コーナー部２２とその両側に変形部２３をそれぞれ備え、それらを平面部２１が繋げている。この側周部２４は、絞り加工により形成されるので、シームレスな環状部を形成している。 FIG. 3 is a perspective view of the annular member 20, and the annular member 20 being manufactured has a substantially rectangular side peripheral portion 24, the remainder of the metal flat plate 10 to be a future flange (10 (41)), and the side peripheral portion. It shows that the metal flat plate 10 which exists in the inside of 24 is provided. The side peripheral portion 24 includes corner portions 22 and deformed portions 23 on both sides at the four corners, and the flat portion 21 connects them. Since the side peripheral portion 24 is formed by drawing, a seamless annular portion is formed.
コーナー部２２は、絞りプレス加工により形成された側周部２４の一部なので、側周部２４の高さに亘り、平面視で略円弧状であり、即ち、円筒の側面の一部のような曲面を構成している。コーナー部２２と平面部２１との間には変形部２３があり、変形部２３は、コーナー部２２と平面部２１とが直接繋がらないこと、即ち、変形部２３は平面のみからなる部分ではないことを表わす。変形部２３は、絞りプレス加工により形成された側周部２４の一部なので、側周部２４の高さに亘り、平面視で同じ形状を有する。平面のみからなる部分でないことは、後工程で変形部２３とコーナー部２２を備える角部を内側から押し出し、エッジ部を形成する際に、変形部２３が、エッジ部へ補充するための金属材料を備えることを意味する。 Since the corner portion 22 is a part of the side peripheral portion 24 formed by drawing press processing, the corner portion 22 has a substantially arc shape in plan view over the height of the side peripheral portion 24, that is, like a part of the side surface of the cylinder. A simple curved surface. There is a deformed portion 23 between the corner portion 22 and the flat portion 21, and the deformable portion 23 is not directly connected to the corner portion 22 and the flat portion 21, that is, the deformable portion 23 is not a portion consisting only of a plane. Represents. Since the deforming part 23 is a part of the side peripheral part 24 formed by drawing press processing, it has the same shape in plan view over the height of the side peripheral part 24. The fact that it is not a part consisting only of a plane means that the metal part for the deformation part 23 to replenish the edge part when the edge part is formed by extruding the corner part including the deformation part 23 and the corner part 22 from the inside in a later process. Means that
＜第２工程＞
図４は、第１工程を行った環状部材２０に対して、さらに、第２工程を行った環状部材２０の様子を示す。具体的には、将来フランジとなる、金属平板であった位置にある金属平板１０の残余（１０（４１））から、所定の高さＨで、側周部２４を成形する。高さＨの大きさは、環状部材の適用に応じ適宜決定される。本実施形態では、図４(b)に示すように、平面部２１を同一高さとし、角部２５は平面部２１より若干低く成形されているが、これに限定されず、例えば、平面部２１と角部２５は同じ高さでもいいし、平面部２１において高さが部分的に異なっていてもいい。
<Second step>
FIG. 4 shows a state of the annular member 20 that has further performed the second step with respect to the annular member 20 that has performed the first step. Specifically, the side peripheral portion 24 is formed at a predetermined height H from the remainder (10 (41)) of the metal flat plate 10 at the position that was the metal flat plate, which will become a flange in the future. The size of the height H is appropriately determined according to the application of the annular member. In the present embodiment, as shown in FIG. 4B, the planar portion 21 has the same height and the corner portion 25 is formed slightly lower than the planar portion 21, but the present invention is not limited to this. The corner portion 25 may have the same height, or the flat portion 21 may have a partially different height.
成形の仕方は、最終的な高さが所定の高さになればよいので、例えば、側周部２４にレーザ光を当て直接トリミングしてもよいし、図２(a)に表わされる側周部２４の中側にある金属平板１０の部分でせん断プレス加工を行い、中側に曲がっている部分を引き起こすことにより側周部２４の平面部２１等と一体的になるように形成してもよい。前工程におけるパンチを押し込む深さは、前者の場合は所定の高さＨよりも大きく、後者の場合は小さい。 Since the final height only needs to be a predetermined height, for example, the side circumferential portion 24 may be directly trimmed by applying a laser beam, or the side circumference shown in FIG. Even if it forms so that it may become integral with the plane part 21 etc. of the side peripheral part 24 by performing a shear press process in the part of the metal flat plate 10 in the inside of the part 24, and causing the part bent in the inside Good. The depth at which the punch is pushed in the previous step is larger than the predetermined height H in the former case, and is smaller in the latter case.
図４(a)は、前工程の図２(a)にあった側周部２４の中側にある金属平板１０の部分が取り除かれ、側周部２４の断面が表わされている。この断面の肉厚Ｗは、原材料である金属平板１０の肉厚にほぼ等しい。角部２５は、図４(c)により、拡大図として示されている。本工程で所定の高さになるように切断されたので、平面視で断面が表わされている。上部を切り取られただけなので、構成は不変であり、角部２５は、主にコーナー部２２とその両側に変形部２３が備えられ、その変形部２３は、平面部２１と繋がっているので、変形部２３は、コーナー部２２と平面部２１との間にある。 FIG. 4A shows a cross section of the side peripheral portion 24 by removing a portion of the metal flat plate 10 on the inner side of the side peripheral portion 24 shown in FIG. 2A of the previous step. The thickness W of this cross section is substantially equal to the thickness of the metal flat plate 10 that is a raw material. The corner portion 25 is shown as an enlarged view in FIG. Since it was cut to a predetermined height in this step, the cross section is shown in plan view. Since the upper part is only cut off, the configuration is unchanged, and the corner part 25 is mainly provided with the corner part 22 and deformed parts 23 on both sides thereof, and the deformed part 23 is connected to the plane part 21. The deformation part 23 is between the corner part 22 and the flat part 21.
コーナー部２２は、側周部２４の高さに亘り、平面視で略円弧状であり、変形部２３は、平面のみからなる部分ではなく、実質的に、平面視で、コーナー部２２の円弧と平面部２１の直線をスムーズに繋げるために曲線を形成し、その曲線が側周部２４の高さに亘っている。角部２５の肉厚Ｗは、本実施形態では、コーナー部２２と変形部２３ではほぼ同じである。 The corner portion 22 has a substantially arc shape in plan view over the height of the side peripheral portion 24, and the deformable portion 23 is not a portion consisting of only a plane, but is substantially in arc shape of the corner portion 22 in plan view. In order to smoothly connect the straight lines of the plane portion 21, a curve is formed, and the curve extends over the height of the side peripheral portion 24. The wall thickness W of the corner portion 25 is substantially the same in the corner portion 22 and the deformed portion 23 in this embodiment.
図５は、環状部材２０の斜視図であり、製造中の環状部材２０が、概ね矩形の側周部２４と、将来フランジとなる金属平板１０の残余（１０（４１））を備えることを示す。側周部２４は、四隅にコーナー部２２とその両側に変形部２３をそれぞれ備え、それらを平面部２１が繋げている。前工程ではあった側周部２４の中側にある金属平板１０を取り除いたことにより、側周部２４は、シームレスな環状部材として形成された。 FIG. 5 is a perspective view of the annular member 20, showing that the annular member 20 being manufactured comprises a generally rectangular side periphery 24 and the remainder of the metal plate 10 (10 (41)) that will become the future flange. . The side peripheral portion 24 includes corner portions 22 at the four corners and deformed portions 23 on both sides thereof, and the flat portion 21 connects them. By removing the metal flat plate 10 on the inner side of the side periphery 24 that was the previous step, the side periphery 24 was formed as a seamless annular member.
＜第３工程＞
図６Ａは、本実施形態における第３工程において、角部からエッジ部を成形する方法を説明するための図である。具体的には、図６Ａ(a)に示すように、前工程において環状部材として形成された側周部２４の曲面として形成された変形部２３とコーナー部２２を、側周部２４の内側から押出金型９０で押し出すことにより、最終的には図６Ａ(b)に示すような、角張ったエッジ部３１を形成する。
<Third step>
FIG. 6A is a diagram for explaining a method of forming an edge portion from a corner portion in the third step in the present embodiment. Specifically, as shown in FIG. 6A (a), the deformed portion 23 and the corner portion 22 formed as the curved surface of the side peripheral portion 24 formed as an annular member in the previous step are formed from the inside of the side peripheral portion 24. By extruding with the extrusion die 90, an angular edge 31 as shown in FIG. 6A (b) is finally formed.
押出金型９０の、コーナー部２２に当接する部分は突出し、変形部２３に当接する部分は平面である。本実施形態では、矩形の環状部材を作成しているので、コーナー部２２に当接し突出する角度は直角であるが、他の多角形、例えば、六角形の環状部材を作成する場合には、押出金型９０のコーナー部２２に当接し突出する角度は１２０度である。押出金型９０は、側周部２４の高さのすべてに亘り、四隅を同時に、側周部２４を押し出すことが好ましい。しかし、形成する環状部材によっては、側周部２４の高さのすべてに亘り押し出さなくても良い、また、図６Ｂのように、型枠金型を用いる場合には、四隅を同時に押し出さなくても良い。型枠金型を用いる場合には、さらに、押し出した後にスプリングバックを起こすことが少ないなどの利点がある。 A portion of the extrusion die 90 that contacts the corner portion 22 protrudes, and a portion that contacts the deformation portion 23 is a flat surface. In the present embodiment, since the rectangular annular member is created, the angle that abuts on and protrudes from the corner portion 22 is a right angle, but when creating another polygon, for example, a hexagonal annular member, The angle at which the corner portion 22 of the extrusion mold 90 contacts and projects is 120 degrees. It is preferable that the extrusion die 90 extrudes the side peripheral portion 24 simultaneously at the four corners over the entire height of the side peripheral portion 24. However, depending on the annular member to be formed, it does not have to be pushed out over the entire height of the side peripheral portion 24, and when using a mold as shown in FIG. 6B, the four corners need not be pushed out at the same time. Also good. In the case of using a mold for forming a mold, there are further advantages such as less occurrence of springback after extrusion.
本実施形態では、コーナー部２２の、金属平板１０（４１）と平行な面における断面形状は、即ち、コーナー部２２は平面視では円弧状であり、変形部２３の、金属平板１０（４１）と平行な面における断面形状は、即ち、変形部２３は平面視では側周部２４の内側方向へ膨らんだ略アーチ状であり、コーナー部２２の円弧の円周上の中点Ｅ２と、変形部の略アーチの頂点Ｅ１とを押し出すことにより、エッジ部３１を成形する。 In the present embodiment, the cross-sectional shape of the corner portion 22 in the plane parallel to the metal flat plate 10 (41), that is, the corner portion 22 is arcuate in plan view, and the metal flat plate 10 (41) of the deformation portion 23 is obtained. In other words, the deformed portion 23 is substantially arched in a plan view in the direction of the inner side of the side peripheral portion 24, and has a middle point E2 on the circumference of the arc of the corner portion 22 and the deformed portion. The edge part 31 is shape | molded by extruding the vertex E1 of the approximate arch of a part.
押出金型９０は、Ｅ１で変形部２３と、Ｅ２でコーナー部２２と当接し押し出すが、まず、Ｅ１に当接し、押し出す過程でＥ２に当接してもよいし、Ｅ１とＥ２同時に当接し押し出してもよい。押し出す方向は、矢印９９のように、２つの平面部２１となす角度が等しくなる方向である。本実施形態では、２つの平面部２１となす角度が４５度ずつになるように押し出す。このように押し出すことにより、変形部２３を形成する金属材料をエッジ部３１の方へ押しやりつつ、角張ったエッジ部を形成することができる。その結果、変形部２３を形成する金属材料をエッジ部３１の方へ補充しながらエッジ部３１を形成できるので、エッジ部３１に亀裂が入ったり、エッジ部３１付近の肉厚が薄くなることを回避できる。 The extrusion die 90 abuts against the deformable portion 23 at E1 and the corner portion 22 at E2, and firstly abuts against E1, and may abut against E2 during the extrusion process, or abuts and extrudes simultaneously with E1 and E2. May be. The pushing direction is a direction in which the angles formed by the two plane portions 21 are equal as indicated by an arrow 99. In this embodiment, the two flat portions 21 are extruded so that the angle between them is 45 degrees. By extruding in this way, it is possible to form an angular edge portion while pushing the metal material forming the deformation portion 23 toward the edge portion 31. As a result, the edge portion 31 can be formed while replenishing the metal material forming the deformed portion 23 toward the edge portion 31, so that the edge portion 31 is cracked or the thickness near the edge portion 31 is reduced. Can be avoided.
押出金型９０は、変形部２３とコーナー部２２を徐々に押し出し、角部を挟む２つの平面部２１が交わる点Ｅ３に来た所で止められる。こうすることにより、変形部２３とコーナー部２２は、平面部２１と一体的に平面として形成され、コーナー部２２の曲率半径より小さな曲率半径を有する角張ったエッジ部３１を形成することができる。 The extrusion die 90 is gradually pushed out of the deformable portion 23 and the corner portion 22, and is stopped at the point E3 where the two flat portions 21 sandwiching the corner portion meet. By doing so, the deformable portion 23 and the corner portion 22 are formed as a flat surface integrally with the flat portion 21, and an angular edge portion 31 having a radius of curvature smaller than the radius of curvature of the corner portion 22 can be formed.
図７は、本実施形態における角部の詳細図であり、第１工程において、コーナー部２２と変形部２３の形成を如何に行うかを説明するものである。なお、コーナー部、変形部、平面部を表わす線（実線）は、各部の肉厚の中心線を意味している。
変形部２３とコーナー部２２の平面視における総延長は、
曲線Ｑ１＋曲線Ｑ２＋曲線Ｒ
である。なお、曲線Ｑ１は曲線Ｅ３１〜Ｅ３１’、曲線Ｑ２は曲線Ｅ３２〜Ｅ３２’、曲線Ｒは曲線Ｅ３１〜Ｅ３２である。
また、エッジがＥ３の位置に形成されたエッジ部においては、平面部の平面視における総延長は、
Ａ＋Ｂ
である。従って、第３工程においてエッジ部を適切に形成するためには、金属材料が適切にエッジ部へ補充されることが重要であり、好ましくは、
曲線Ｑ１＋曲線Ｑ２＋曲線Ｒ＝Ａ＋Ｂ
の関係が成立するように、第１工程で変形部２３とコーナー部２２を形成しておくことが必要である。なお、各部の肉厚は一定であるとの前提である。しかし、厳密に同じである必要はなく、金属平板の肉厚にもよるが、およそ１０〜２０％の違いはあってもよい。また、プレス加工後の肉厚は、元の金属平板１０の肉厚の５０％以下になると割れが生じる虞があるので、元の金属平板１０の肉厚の５０％以下にならない範囲で、エッジ部を形成することが好ましい。
FIG. 7 is a detailed view of a corner portion in the present embodiment, and explains how the corner portion 22 and the deformable portion 23 are formed in the first step. In addition, the line (solid line) showing a corner part, a deformation | transformation part, and a plane part means the centerline of the thickness of each part.
The total extension of the deformed portion 23 and the corner portion 22 in plan view is
Curve Q1 + Curve Q2 + Curve R
It is. Curve Q1 is curves E31 to E31 ′, curve Q2 is curves E32 to E32 ′, and curve R is curves E31 to E32.
In addition, in the edge portion where the edge is formed at the position of E3, the total extension in the plan view of the plane portion is
A + B
It is. Therefore, in order to appropriately form the edge portion in the third step, it is important that the metal material is appropriately replenished to the edge portion, preferably,
Curve Q1 + Curve Q2 + Curve R = A + B
It is necessary to form the deformed portion 23 and the corner portion 22 in the first step so that the relationship is established. It is assumed that the thickness of each part is constant. However, it is not necessary to be exactly the same, and depending on the thickness of the metal flat plate, there may be a difference of about 10 to 20%. Further, since the thickness after press working may be cracked when the thickness of the original metal flat plate 10 is 50% or less, the edge is within the range not to be 50% or less of the original metal flat plate 10 thickness. It is preferable to form a part.
図８は、第２工程を行った環状部材２０に対して、さらに、第３工程を行った環状部材２０の様子を示す。具体的には、第３工程において、側周部２４の高さに亘り、環状部材の内側からコーナー部２２と変形部２３を押し出すことにより、変形部２３を形成する金属材料をエッジ部３１へ補充したことにより、変形部２３とコーナー部２２は、平面部２１と一体的に平面として形成され、環状部材の内周面において、小さな曲率半径を有するエッジ部３１が成形された。第３工程を行ったことにより、第１工程で形成されたコーナー部２２と変形部２３は、エッジ部３１と平面部に変化したことになる。 FIG. 8 shows a state of the annular member 20 that has further performed the third step with respect to the annular member 20 that has performed the second step. Specifically, in the third step, the metal material forming the deformed portion 23 is pushed to the edge portion 31 by extruding the corner portion 22 and the deformed portion 23 from the inside of the annular member over the height of the side peripheral portion 24. By replenishing, the deformable portion 23 and the corner portion 22 are formed as a flat surface integrally with the flat portion 21, and the edge portion 31 having a small radius of curvature is formed on the inner peripheral surface of the annular member. By performing the third step, the corner portion 22 and the deformed portion 23 formed in the first step are changed to the edge portion 31 and the plane portion.
図９は、本実施形態における第３工程終了時の環状部材の斜視図を示す。上記第１〜第３工程を行ったことにより、側周部２４は角張ったエッジ部を有するシームレスな環状部材を形成し、また、その側周部２４である環状部材の一端において、フラットなフランジ１０（４１）を有する環状部材２０を形成できた。 FIG. 9 is a perspective view of the annular member at the end of the third step in the present embodiment. By performing the first to third steps, the side peripheral portion 24 forms a seamless annular member having an angular edge portion, and a flat flange is formed at one end of the annular member which is the side peripheral portion 24. An annular member 20 having 10 (41) could be formed.
＜第４工程＞
図１０は、本実施形態における第４工程において、側周部２４の成形に使用されなかった金属平板１０の一部から形成されたフランジをトリミングして成形し、第４工程終了時の環状部材の形状を示した図である。また、図１１は、同斜視図である。フランジは、環状部材の適用に応じて適宜その大きさ、側周部２４からの巾などが定められる。これにより、角張ったエッジ部を有するシームレスな環状部材であり、その環状部材の一端においてフラットなフランジを有する環状部材が作成された。
<4th process>
FIG. 10 shows an annular member formed by trimming and forming a flange formed from a part of the metal flat plate 10 that was not used for forming the side peripheral portion 24 in the fourth step in the present embodiment. It is the figure which showed the shape. FIG. 11 is a perspective view of the same. The size of the flange and the width from the side peripheral portion 24 are appropriately determined according to the application of the annular member. Thereby, it was a seamless annular member having an angular edge portion, and an annular member having a flat flange at one end of the annular member was created.
本実施形態では、側周部２４の高さＨは、環状部材の肉厚Ｗの５倍以上であり、また、角張ったエッジ部、具体的には、内周面の曲率半径を肉厚Ｗより小さく成形されたエッジ部を備えている。側周部２４の高さＨが環状部材の肉厚Ｗの５倍以上、内周面の曲率半径を肉厚Ｗより小さい曲率半径をもって成形するエッジ部を有する場合、特に本願発明が有効であり、本願発明により、環状部材の側周部２４の高さが高く、エッジの肉厚が均質であり、曲率半径の小さいエッジを備える環状部材を製造することができる。 In the present embodiment, the height H of the side peripheral portion 24 is not less than 5 times the wall thickness W of the annular member, and the radius of curvature of the angular edge portion, specifically, the inner peripheral surface is set to the wall thickness W. It has a smaller shaped edge. The present invention is particularly effective when the side peripheral portion 24 has an edge portion in which the height H is 5 times or more the wall thickness W of the annular member and the inner peripheral surface has a radius of curvature smaller than the wall thickness W. According to the present invention, it is possible to manufacture an annular member having an edge having a high side peripheral portion 24 of the annular member, a uniform edge thickness, and a small curvature radius.
＜第２実施形態＞
第１実施形態では、フランジを有する共に、変形部２３は、平面視では側周部２４の内側方向へ膨らんだ略アーチ状であったが、本実施形態では、フランジはなく、変形部の形状が異なる。図１２は、本実施形態における第１工程において形成する変形部のバリエーションを示し、変形部２３Ａは、平面視では波型であることを示す。型枠金型９１が、側周部２４Ａの外側にあり、変形部２３Ａとコーナー部２２Ａは、型枠金型９１と押出金型９０との間に挟まれ、エッジ部と平面部が成形される。
Second Embodiment
In the first embodiment, the deformed portion 23 has a flange and has a substantially arch shape that swells inward of the side peripheral portion 24 in a plan view. However, in the present embodiment, there is no flange, and the shape of the deformed portion. Is different. FIG. 12 shows a variation of the deforming portion formed in the first step in the present embodiment, and the deforming portion 23A shows a wave shape in plan view. The mold die 91 is outside the side peripheral portion 24A, the deformable portion 23A and the corner portion 22A are sandwiched between the mold die 91 and the extrusion die 90, and the edge portion and the flat portion are molded. The
押出金型９０は、コーナー部２２Ａの円弧の円周上の中点と、変形部２３Ａの波型の一方の頂点とを押し出す。また、同時に、変形部２３Ａの波型の他方の頂点は、型枠金型９１に押される。その際、波型の変形部２３Ａが平面部に変形するときに余った金属材料は、コーナー部２２Ａがエッジ部に変形する部分に補充される。その結果、エッジ部においてひび割れ等を回避でき、変形部２３Ａとコーナー部２２Ａは、平面部２１と一体的に平面として形成され、コーナー部２２Ａの曲率半径より小さな曲率半径を有する角張ったエッジ部３１を形成することができる。
なお、上記以外は、第１実施形態と同じである。
The extrusion die 90 extrudes the midpoint on the circumference of the arc of the corner portion 22A and one apex of the corrugation of the deformation portion 23A. At the same time, the other apex of the corrugated portion 23A is pushed by the mold 91. At that time, the metal material remaining when the corrugated deforming portion 23A is deformed into the flat portion is replenished to the portion where the corner portion 22A is deformed into the edge portion. As a result, cracks and the like can be avoided at the edge part, and the deformed part 23A and the corner part 22A are formed as a flat surface integrally with the flat part 21, and the angular edge part 31 having a curvature radius smaller than the curvature radius of the corner part 22A. Can be formed.
Other than the above, the second embodiment is the same as the first embodiment.
＜第３実施形態＞
第１及び第２実施形態では、変形部の肉厚は他の部分の肉厚と同じであったが、本実施形態では、変形部２３Ｂは、他の部分とは肉厚が異なっている。図１３は、変形部２３Ｂが、側周部２４Ｂの内側に膨らんだ略アーチ状であり、側周部２４Ｂの外側は平面であり、他の部分とは肉厚が異なっていることを示す。
<Third Embodiment>
In the first and second embodiments, the thickness of the deformed portion is the same as the thickness of the other portion, but in the present embodiment, the deformable portion 23B is different in thickness from the other portions. FIG. 13 shows that the deformed portion 23B has a substantially arch shape that swells inside the side peripheral portion 24B, the outside of the side peripheral portion 24B is a flat surface, and is different in thickness from the other portions.
押出金型９０は、コーナー部２２Ｂの円弧の円周上の中点と、変形部２３Ｂの略アーチ状の頂点とを押し出す。また、押出金型９０に押されても、側周部２４Ｂの外側は、即ち、変形部２３Ｂの外側は、型枠金型９１に支えられているので、押さえ付けられた変形部２３Ｂの金属材料が、コーナー部２２Ｂの方へ移動し、補充され、エッジ部が形成される。これにより、変形部２３Ｂとコーナー部２２Ｂは、平面部２１と一体的に平面として形成され、コーナー部２２Ｂの曲率半径より小さな曲率半径を有する角張ったエッジ部３１を形成することができる。
なお、上記以外は、第１実施形態と同じである。
変形部の平面視形状について、略アーチ状、波型、略アーチ状余肉を上述したが、これ以外には、山形、角形など、直線に比し、材料を多く有することのできる形であればよい。
The extrusion die 90 extrudes the midpoint on the circumference of the arc of the corner portion 22B and the substantially arched apex of the deformation portion 23B. Even when pressed by the extrusion die 90, the outer side of the side peripheral portion 24B, that is, the outer side of the deformation portion 23B is supported by the mold die 91, so that the metal of the pressed deformation portion 23B is supported. The material moves toward the corner 22B and is replenished to form the edge. As a result, the deformable portion 23B and the corner portion 22B are formed as a flat surface integrally with the flat portion 21, and an angular edge portion 31 having a radius of curvature smaller than the radius of curvature of the corner portion 22B can be formed.
Other than the above, the second embodiment is the same as the first embodiment.
As for the shape of the deformed portion in plan view, the substantially arched shape, the corrugated shape, and the substantially arched surplus thickness have been described above. That's fine.
なお、本願において、環状部材の材料となる金属平板１０の原材料は、特に限定されない。本環状部材が適用される領域に適宜適合させて適用される。たとえば、後述のダクトに適用する場合は、亜鉛めっき鉄板、亜鉛めっき鋼板、ガルバリウム鋼板、ステンレス鋼板、アルミニウム、マグネシウム、チタンなどが一般的である。 In addition, in this application, the raw material of the metal flat plate 10 used as the material of an annular member is not specifically limited. The annular member is applied by being appropriately adapted to the region to which the annular member is applied. For example, when applied to a duct described later, galvanized iron plate, galvanized steel plate, galvalume steel plate, stainless steel plate, aluminum, magnesium, titanium and the like are common.
＜適用例＞
本願の多角形の環状部材は、以下のように適用される。
例えば、建築物内で空調、換気、排煙の目的で設備される空気ダクト、特に、角ダクトの、ダクト同士の接合、ダクトと他の部材との接合、ダクトの末端処理部などに適用される。例えば、ダクト同士の接合の場合、一般的には、現場での溶接、アングルのフランジをダクトの両端に接続し、現場でそのフランジ同士をボルト等で固定して接続する方法、角ダクトの端を外折にめくり上げてフランジとし、四隅の欠けた部分にコーナー部材を取り付け、現場でその部材同士をボルト等で接続する方法などが使用されている。
<Application example>
The polygonal annular member of the present application is applied as follows.
For example, it is applied to air ducts installed for the purpose of air conditioning, ventilation, and smoke exhaustion in buildings, especially corner ducts, joining ducts, joining ducts and other parts, duct end treatment parts, etc. The For example, in the case of joining ducts, generally, welding at the site, connecting flanges at angles to both ends of the duct, fixing the flanges with bolts etc. at the site, and connecting the ends of the square ducts A method is used in which corners are attached to portions where the four corners are cut off and the members are connected to each other with bolts or the like on the site.
しかし、これらはいずれも現場での作業負担が大きく、また、部材自体のコストも高い。そこで、本願の環状部材をこのような用途で使用すると、本環状部材は安い製造コストで製造されるので、空気ダクト自体のコストを下げることができ、また、現場での施工を容易にするので、施工コストも下げることが可能となる。 However, these all have a large work load on site, and the cost of the member itself is high. Therefore, when the annular member of the present application is used in such an application, the annular member is manufactured at a low manufacturing cost, so the cost of the air duct itself can be reduced, and the construction at the site is facilitated. The construction cost can also be reduced.
一般的には、角ダクト自体は板金で製作されることが多いので、角ダクトのエッジは曲率半径の小さい角張ったエッジを有している。従って、角ダクトを接合する部材も、空気の漏れを防ぐため、エッジは曲率半径の小さい角張ったエッジを有すること、また、フランジ等の接合面はフラットであることが重要となる。従来のプレス加工で製造される部材では、曲率半径の小さい角張ったエッジを形成することが困難であったため、本願のようなプレス加工で製造される部材をこのような所に適用することは困難であった。 In general, since the square duct itself is often made of sheet metal, the edge of the square duct has an angular edge with a small curvature radius. Therefore, it is important that the member that joins the square duct also has an edge that has a small curvature radius and a flat joining surface such as a flange in order to prevent air leakage. In a member manufactured by conventional press working, it is difficult to form an angular edge with a small radius of curvature, so it is difficult to apply a member manufactured by pressing as in this application to such a place. Met.
しかし、上述のように、本願の環状部材は、環状部材の内周面に小さな曲率半径を備え、均質な肉厚を有するエッジをプレス加工により形成し、安い製造コストで製造することにより、安価な矩形の環状部材を提供できるようになったことにより、このような適用が可能となった。また、角ダクトは、一般に、１．５ｍｍ以下の薄い板材を用いることが多いので、本願の環状部材の肉厚も、角ダクトの肉厚に合わせ、１．５ｍｍ以下にすることが好ましいが、本願の製造方法は、肉厚が１．５ｍｍ以下の薄い板材であっても、ひび割れ等を生ずることなく、エッジを形成した多角形の環状部材を製造することを可能とする。 However, as described above, the annular member of the present application has a small radius of curvature on the inner peripheral surface of the annular member, and an edge having a uniform thickness is formed by pressing, and is manufactured at a low manufacturing cost. The application of such a rectangular annular member has become possible. In addition, since the square duct generally uses a thin plate material of 1.5 mm or less, the thickness of the annular member of the present application is preferably 1.5 mm or less in accordance with the thickness of the square duct, The manufacturing method of the present application makes it possible to manufacture a polygonal annular member having an edge without causing cracks or the like even if the thickness is 1.5 mm or less.
ダクトと他の部材（例えば、換気扇やシャッター）との接合とダクトの末端処理部（例えば、吹出し口や吸込み口の枠部）においても、同様に、空気の漏れを防ぐため、エッジは曲率半径の小さい角張ったエッジを有することが重要となるので、本願の環状部材が有効である。 In the same way, the edge has a radius of curvature to prevent leakage of air at the joint between the duct and other members (for example, a ventilation fan or shutter) and at the end processing section of the duct (for example, the frame of the outlet or suction port). Therefore, the annular member of the present application is effective.
他の適用は、例えば、鉄骨造・木造における柱梁の接合部材（継ぎ手）にも適用可能である。一般的に、構造材の鉄骨や木材の角はエッジのある凸角を有するが、継ぎ手はその構造材と密着させて接合する必要があるので、その構造材を囲む継ぎ手も内周面において構造材と密着するために曲率半径の小さい角張った凹角のエッジが必要となる。 Other applications are also applicable, for example, to column beam joint members (joints) in steel frame and wooden structures. In general, the corners of steel frames and timber of structural materials have convex corners with edges, but the joints need to be in close contact with the structural material so that the joints surrounding the structural materials are also structured on the inner peripheral surface. In order to be in close contact with the material, an angular concave edge with a small curvature radius is required.
上述のように、本願の環状部材は、矩形の環状部材の内周面に小さな曲率半径を備え、均質な肉厚を有するエッジをプレス加工により形成し、安い製造コストで製造することにより、安価な矩形の環状部材を提供できるようになったことにより、このような適用が可能となった。 As described above, the annular member of the present application has a small radius of curvature on the inner peripheral surface of the rectangular annular member, and forms an edge having a uniform thickness by press working, and is manufactured at a low manufacturing cost. The application of such a rectangular annular member has become possible.
また、柱と梁のような直角をなして接合する場合においては、本環状部材のフランジの四隅を切断し、対向する一対のフランジを環状部材の軸方向に延ばし、例えば、本環状部材を梁側に取り付ける場合には、梁の側面に延ばした一対のフランジを、梁の上面に延ばさなかった一対のフランジをボルト等で取り付け、環状部材の位置にほぞ組とともに柱を取り付ければ、強固な構造が可能となる。 In addition, when joining at a right angle such as a column and a beam, the four corners of the flange of the annular member are cut, and a pair of opposing flanges are extended in the axial direction of the annular member. When attaching to the side, a pair of flanges that extend to the side of the beam, a pair of flanges that do not extend to the top of the beam with bolts, etc., and a column with a tenon set at the position of the annular member, a strong structure Is possible.
さらに、例えば、本願環状部材を窓枠に適用することが可能である。一般的には、窓枠は、別々の上下左右の部材を角でつなぎ合わせて製造されるが、これはコスト高の一因となっている。一体成型することができれば、コスト安く製造することが可能となる。 Furthermore, for example, the present annular member can be applied to a window frame. In general, a window frame is manufactured by connecting separate upper, lower, left, and right members at corners, which contributes to high cost. If it can be integrally formed, it can be manufactured at low cost.
そこで、本願環状部材を適用すれば、本願の環状部材は、矩形の環状部材の内周面に小さな曲率半径を備えるので窓との密閉性に問題はなく、安い製造コストで製造することにより、安価な窓枠を提供できる。 Therefore, if the present annular member is applied, the annular member of the present application has a small radius of curvature on the inner peripheral surface of the rectangular annular member, so there is no problem in sealing with the window, and by manufacturing at a low manufacturing cost, An inexpensive window frame can be provided.
１０ 金属平板
２０ 環状部材（製造工程中）
２１ 平面部
２２ コーナー部
２３ 変形部
２４ 側周部
２５ 角部
３１ エッジ部
４０ 環状部材
４１ フランジ
９０ 押出金型
９１ 型枠金型
９２ ダイス
９３ しわ押え
９４ パンチ
９８ 素材
９９ 力の向き
10 metal flat plate 20 annular member (during manufacturing process)
21 Plane part 22 Corner part 23 Deformation part 24 Side peripheral part 25 Corner part 31 Edge part 40 Annular member 41 Flange 90 Extrusion die 91 Formwork die 92 Die 93 Wrinkle presser 94 Punch 98 Material 99 Direction of force
Claims (7)
平面部と、曲面からなるコーナー部と、前記コーナー部と前記平面部の境界領域にある変形部とからなる側周部を絞り加工により成形する工程と、
前記金属平板面から予め定めた高さに前記側周部を成形する工程と、
前記側周部の前記高さに亘り、前記環状部材の内側から前記コーナー部を押し出すと共に、前記変形部を形成する金属材料をエッジ部へ補充することにより、前記環状部材の内周面において、前記コーナー部から、前記コーナー部の曲率半径より小さな曲率半径を有する前記エッジ部を成形する工程と、
を含む多角形の環状部材の製造方法。 A method for producing a polygonal annular member from a metal flat plate by pressing,
A step of forming a side peripheral portion including a flat portion, a corner portion formed of a curved surface, and a deformed portion in a boundary region between the corner portion and the flat portion by drawing,
Forming the side periphery at a predetermined height from the flat metal surface;
In the inner peripheral surface of the annular member, by extruding the corner portion from the inside of the annular member over the height of the side peripheral portion and replenishing the edge portion with a metal material forming the deformed portion, Forming the edge portion having a radius of curvature smaller than the radius of curvature of the corner portion from the corner portion;
Of manufacturing a polygonal annular member including
前記変形部の断面形状は、前記側周部の内側方向へ突出した略アーチ状であり、
前記コーナー部の前記円弧の円周上の中点と、前記変形部の略アーチの頂点とを押し出すことにより、前記エッジ部を成形することを特徴とする請求項１又は２いずれかに記載の多角形の環状部材の製造方法。 The cross-sectional shape of the corner portion is an arc shape,
A cross-sectional shape of the deforming portion is a substantially arch shape protruding inward of the side peripheral portion,
The edge portion is formed by extruding a midpoint on the circumference of the arc of the corner portion and a vertex of a substantially arch of the deformable portion, according to claim 1 or 2. Manufacturing method of polygonal annular member.
前記エッジ部における内周面の曲率半径を、前記肉厚より小さく成形することを特徴とする請求項１乃至３いずれかに記載の矩形の環状部材の製造方法。 The height of the side periphery is not less than 5 times the wall thickness of the rectangular annular member,
The method for manufacturing a rectangular annular member according to any one of claims 1 to 3, wherein a radius of curvature of an inner peripheral surface of the edge portion is formed to be smaller than the thickness.
前記多角形環状部材は、側周部とフランジからなり、
前記側周部は、内周面において前記多角形環状部材の肉厚より小さい曲率半径を有するエッジ部を備え、
前記側周部の前記高さは、前記肉厚の５倍以上であり、
前記フランジは、前記側周部の一端に備えられている、
ことを特徴とする多角形環状部材。 A polygonal annular member formed from a metal flat plate by pressing,
The polygonal annular member comprises a side periphery and a flange,
The side peripheral portion includes an edge portion having a radius of curvature smaller than the thickness of the polygonal annular member on the inner peripheral surface,
The height of the side periphery is not less than 5 times the wall thickness,
The flange is provided at one end of the side periphery,
A polygonal annular member characterized by that.
前記多角形環状部材は、側周部とフランジからなり、
前記側周部は、内周面において前記多角形環状部材の肉厚より小さい曲率半径を有するエッジ部を備え、
前記側周部の前記高さは、前記肉厚の５倍以上であり、
前記フランジは、前記側周部の一端に備えられている、
ことを特徴とする多角形環状部材。 A seamless polygonal annular member,
The polygonal annular member comprises a side periphery and a flange,
The side peripheral portion includes an edge portion having a radius of curvature smaller than the thickness of the polygonal annular member on the inner peripheral surface,
The height of the side periphery is not less than 5 times the wall thickness,
The flange is provided at one end of the side periphery,
A polygonal annular member characterized by that.
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